I've been doing some searching around about this round. Most of the forums are from 2010. I'm thinking about buying an AR10 338 federal. Anybody using it? Pros Cons? My intended purpose is for elk out to 600yrds. I already have a 7mm mag bolt gun that Jared built for me. I'm just looking for a walking around gun that I can make a quick shot if need be. As well as put a hurting on some coyote. Thank you in advance for your time and info.